these 2 derivations will be built:
  /nix/store/v5lhzk4yi88dgzi1yiyxh4390jf1w2vi-closure-info.drv
  /nix/store/5yg1c97k41v6ahkjabyp3r86c5cvy2q2-check-vars.drv
error: path '/nix/store/9xg1i07wwm1k61w956y1ds797rfwyma8-check-vars' is not valid
error: Cannot build '/nix/store/5yg1c97k41v6ahkjabyp3r86c5cvy2q2-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9xg1i07wwm1k61w956y1ds797rfwyma8-check-vars